“double jack”的概念、定义、翻译、参考文献-科学参考

单词	double jack
释义	double jack [¦dǝb·ǝl `jak] ^{DESIGN ENGINEERING} A heavy hammer, weighing about 10 pounds (4.5 kilograms), requiring the use of both hands. ^{MINING ENGINEERING} See <<double drill column>>
随便看	firnification firn limit firn line firn snow fir oil first answer print first arrival first bottom first category first-class current first cost first countable topological space first-degree burn first derived curve first detector first estimate-second estimate method first filial generation first fire first fire composition first Fresnel zone first-generation first-generation computer first gust first harmonic first-in, first-out

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